diff --git a/source/dnode/vnode/meta/inc/metaDef.h b/source/dnode/vnode/meta/inc/metaDef.h
index aaae07d6f4..71ba42b985 100644
--- a/source/dnode/vnode/meta/inc/metaDef.h
+++ b/source/dnode/vnode/meta/inc/metaDef.h
@@ -26,8 +26,8 @@ extern "C" {
 struct SMeta {
   char*           path;          // path of current meta
   SMetaOptions    options;       // meta option
-  SMetaDB*        pMetaDB;       // meta DB for real storage engine
-  STbUidGenerator uidGenerator;  // meta table UID generator
+  SMetaDB         metaDB;        // meta DB for real storage engine
+  STbUidGenerator uidGnrt;  // meta table UID generator
 };
 
 #ifdef __cplusplus
diff --git a/source/dnode/vnode/meta/src/metaDB.c b/source/dnode/vnode/meta/src/metaDB.c
index 6dea4a4e57..73d54d7682 100644
--- a/source/dnode/vnode/meta/src/metaDB.c
+++ b/source/dnode/vnode/meta/src/metaDB.c
@@ -11,4 +11,41 @@
  *
  * You should have received a copy of the GNU Affero General Public License
  * along with this program. If not, see <http://www.gnu.org/licenses/>.
- */
\ No newline at end of file
+ */
+
+#include "meta.h"
+#include "metaDef.h"
+
+int metaOpenDB(SMeta *pMeta) {
+  /* TODO */
+  pMeta->metaDB.pDB = tkvOpen(NULL, "db");
+  if (pMeta->metaDB.pDB == NULL) {
+    //   TODO
+    return -1;
+  }
+
+  pMeta->metaDB.pIdx = tkvOpen(NULL, "index");
+  if (pMeta->metaDB.pIdx == NULL) {
+    /* TODO */
+    return -1;
+  }
+
+  { /* TODO: for cache*/
+  }
+
+  return 0;
+}
+
+void metaCloseDB(SMeta *pMeta) { /* TODO */
+  {
+    // TODO: clear cache
+  }
+
+  if (pMeta->metaDB.pIdx) {
+    tkvClose(pMeta->metaDB.pIdx);
+  }
+
+  if (pMeta->metaDB.pDB) {
+    tkvClose(pMeta->metaDB.pIdx);
+  }
+}
\ No newline at end of file
diff --git a/source/dnode/vnode/meta/src/metaMain.c b/source/dnode/vnode/meta/src/metaMain.c
index c0fcf6898a..d30c938989 100644
--- a/source/dnode/vnode/meta/src/metaMain.c
+++ b/source/dnode/vnode/meta/src/metaMain.c
@@ -57,14 +57,14 @@ SMeta *metaOpen(const char *path, const SMetaOptions *pMetaOptions) {
     return NULL;
   }
 
-  tableUidGeneratorInit(&(pMeta->uidGenerator), IVLD_TB_UID);
+  tableUidGeneratorInit(&(pMeta->uidGnrt), IVLD_TB_UID);
 
   return pMeta;
 }
 
 void metaClose(SMeta *pMeta) {
   if (pMeta) {
-    tableUidGeneratorClear(&pMeta->uidGenerator);
+    tableUidGeneratorClear(&pMeta->uidGnrt);
     metaCloseDB(pMeta);
     free(pMeta);
   }